Now for the phrase (word) I hate the most right now: hecka.
Whenever someone around me uses hecka because they're too polite to say hella (which they probably shouldn't be saying anyway...), I make sure to swear extra on their behalf.

According to a study done by Oxford University researchers the 10 most irritating phrases are

1 – At the end of the day
2 – Fairly unique
3 – I personally
4 – At this moment in time
5 – With all due respect
6 – Absolutely
7 – It’s a nightmare
8 – Shouldn’t of
9 – 24/7
10 – It’s not rocket science

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In that list, "shouldn't of" is the only thing that irritates me.

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GAAAAH! That one drives me up the wall. I have to restrain myself from correcting anyone here who uses it.

I hate the word "monetize". Whoever invented it should be shot without trial.

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For years I thought the same thing about "morph", as a verb, and then "leverage", as a verb. "You don't leverage something, you lever it!" (And I'm not even sure if "lever" is a grammatically correct verb.) But eventually I caved in and started using both.

I also hate it when nouns are used as verbs, and vice versa. For instance, using the word "BAKE" as an actual thing (such as "Chicken and rice BAKE") and "SOURCE" as something you do ("We source from responsible fisheries" and all that crap).

I also hate it when nouns are used as verbs, and vice versa. For instance, using the word "BAKE" as an actual thing (such as "Chicken and rice BAKE") and "SOURCE" as something you do ("We source from responsible fisheries" and all that crap).

I just thought of another phrase (not a saying) that annoys me: "here's the thing...". I had a compliant with a company and the customer service person kept using that phrase when telling me why the company couldn't help me.

I hear "nothing is for always" mostly from elderly people. Closely followed by "when I was young [insert any noun you can think of] used to be so much better!"
On the other hand - when I was young many things really were better... Bother! When did I grow that old?